cagayensis, Zenarchopterus Herre [A. W. C. T.] 1926:537 [Philippine Journal of Science v. 31 (no. 4); ref. 2122] Pinacanauan River, Tuguegarao, Cagayan, Luzon Island, Philippines. Syntypes: (9) whereabouts unknown. •Status uncertain -- (Collette 1982:266 [ref. 5497]). •Synonym of Zenarchopterus philippinus (Peters 1868) -- (Collette 2004:22 [ref. 27583], Kottlelat 2013:297 [ref. 32989] with question). Current status: Synonym of Zenarchopterus philippinus (Peters 1868). Zenarchopteridae. Habitat: freshwater.